Metallic packing



Feb. 23 1926.

1,574,412 E. E. SWITZER METALLIC PACKING Filed Sept. 3, 1925 Patented Feb. 23, 1926.

uurrs. stares ELMER E. SWITZER, OF BEAUMONT, TEXAS, ASSIGNOR TO GEORGE D. SWITZEIR, RICHARD E. SWITZER, AND THOMAS T. SVIITZER, ALL 6F BEAUMONT, TEXAS.

' METALLIC PACKING.

Application filed September 3, 1925. Serial No. 54,243.

To all whom it may concern:

Be it known that I, ELMER E. Swrrznn, a citizen of the United States, residing at Beaumont, in the county of Jefferson and State of Texas, have invented certain new and useful Improvements in Metallic Pack ings, of which the following is a specification, reference being had therein to the ac companying drawings.

This invention relates to a metallic spiral packing, and the object of the invention is the construction of a simple and eificient packing which is adapted chiefly for use on centrifugal pumps or plunger pumps, in side pump packing, rods of all kinds, in-

eluding steam,,a1r, or any piston rods.

With this and other objects in view, my invention comprises certain novel combinations, constructions and arrangements of parts as will be hereinafter described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a perspective view of a metallic spiral packing to be used on the shaft of a centrifugal pump, steam turbine or anything that rotates.

Figure 2 is a longitudinal, sectional view of a centrifugal pump with my metallic spiral packing in position.

Figure 3 is a view partly in perspective and partly in section of my rubber crown metallic packing, to be used on a piston rod or an outside packed pump plunger.

Figure 4 is a view partly in perspective and partly in section of one of the rings re versed to adapt the same to be applied for an inside packing for an inside packed pump.

Figure 5 is an enlarged, fragmentary view, partly in perspective and partly in section of my packing.

Referring to the drawings by numerals, 1 designates the rubber crown or casing which partly surrounds the two rings 2. Each of the rings 2 comprises a body hava flat, inner face. These inner faces of the ring 2 fit snugly together as shown in the drawings, and their outer faces are angulax, as shown, with their outer edges 3 projecting slightly beyond one face of the easing 1, so that the sharp, square edges of the metallic rings, when engaging a rod, forms face of the casing 1, instead of inwardly,

as in Figs. 1 to This ring is particularly adapted for an inside packing for an inside packed pump.

Ilft is to noted that the casing 1 is grooved,

at 4.; this groove of the outer edge of the crown or casing produces a better fit in the gland or stuffing box.

I have found from practical use that my packing is especially designed for ammonia pumps, since the packing takes care of the 7 expansion that often suddenly occurs; fur-' ther, it also takes care of the sudden drop in temperature as the rubber crown or casing automatically contracts when the temperature is lower. It is to be understood that mv packing may be readily installed without dismantling the rod. hen the gland is taken up enough to admit another ring the mere installing of the extra ring is almost similar to an entire new set of packing.

It is also to be understood that with my packing, if for any cause it becomes necessary to take the rod out it will only be necessary to loosen the gland nuts and pull the rod out of the packing; when the work is finished, replace the rod, tighten the gland nuts and this reassembling is complete.

lVhile I have described the preferred embodiments of my invention, and have il-' lustrated the same in the accompanying drawings, certain minor changes or alterations may appear to one skilled in the art to which this invention relates, during the extensive manufacture of the same and I, therefore, reserve the right to make such alterations or changes as shall fairly fallwithin the scope of the appended'claims.

What I claim is:

1. As a new article of manufacture a packing comprising a spiral rubber casing having an outer grooved continuous edge and an. inner open edge, a pair of sectional metallic inserts extending into said open edgmsaidf inserts being providedwith inner flat engaging faces nnrl with outer angular faces, the sections of one insert being arranged in staggered relation to line sections in the other insert, and lmving the outer faces of said inserts projecting beyond one face of the rubber casing and provided with flat outer faces and with side flanges producing exposed sharp square edges to bear on a rod to form a perfect joint substantially as shown and described.

2. Apaoking; comprising a rubber casing having an outer grooved face, and sectional metallic inserts in said casing and projecting beyond the inner face of the using f r producing u metallic bearing surface for engaging; u rod or piston.

In testimony whereof I hereunto ui'iix my signature.

ELMER E. SWITZER. 

